PLATE V. 
Bul. 32, New Series, Div of Entomology, U. S. Dept. of Agriculture. 
Fic. 1.—A 
, GALLERIES ENGRAVED IN SURFACE OF WOOD CUT FROM OLD 
DEAD TREE; B BARK WITH INNER PORTION DESTROYED BY GALLER- 
IES AND 
NAL.) 
LARVAL MINES. ABOUT ONE-THIRD NATURAL SIZE. (ORIGI- 
Fic. 2.—GALLERIES IN INNER BARK AND SURFACE OF WOOD OF RAILROAD 
TIES AND EDGING STRIPS. ABOUT ONE-THIRD NATURAL SIZE. (ORIGI- 
NAL. ) 
